Post maximum light and late time optical imaging polarimetry of type I superluminous supernova 2020znr

ABSTRACT Optical imaging polarimetry was conducted on the hydrogen poor superluminous supernova 2020znr during three phases after maximum light (≈ +34 d, +288 and +289 d). After instrumental interstellar polarization correction, all measurements are consistent with null-polarization detection. Modelling curve a magnetar spin-down model shows that SN2020znr has similar ejecta parameters to other SLSNe. A comparison of best-fitting values discussed in literature SN 2017egm 2015bn, two SLSNe showing an increase light, suggests higher mass may prevent access geometry inner optical polarimetry. The combined information provided by spectroscopy light-curve analysis type I be interesting avenue categorize properties this class transients. This approach would require expand sample data currently available early late time epochs new measurements.